Selective Aerobic Oxidation of Lactate to Pyruvate Catalyzed by Vanadium‐Nitrogen‐Doped Carbon Nanosheets

The catalytic oxidative dehydrogenation of lactates with molecular oxygen is a promising yet challenging route for producing high‐value pyruvates from biomass. Here we report a simple synthetic strategy for preparing nitrogen‐doped carbon nanosheets (NCNs) starting from two abundant precursors, chea...

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Bibliographic Details
Published in:ChemCatChem 2019-08, Vol.11 (15), p.3381-3387
Main Authors: Zhang, Wei, Oulego, Paula, Slot, Thierry K., Rothenberg, Gadi, Shiju, N. Raveendran
Format: Article
Language:English
Subjects:
Anchoring
Annealing
biomass conversion
Carbon
Catalysis
Catalytic oxidation
Dehydrogenation
Ethyl lactate
Heat treatment
heterogeneous catalysis
Lactates
Melamine
Nanosheets
Nitrogen
Oxidation
Oxygen
platform molecules
Pyrolysis
Pyruvates
synergistic effect
Vanadium oxides
XPS
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Summary:The catalytic oxidative dehydrogenation of lactates with molecular oxygen is a promising yet challenging route for producing high‐value pyruvates from biomass. Here we report a simple synthetic strategy for preparing nitrogen‐doped carbon nanosheets (NCNs) starting from two abundant precursors, cheap melamine and glucose, and using a simple thermal‐annealing process. The resulting NCNs feature numerous edges and holes for anchoring vanadium oxides (V‐NCNs). This creates cooperative catalytic sites that boost the catalytic oxidation of ethyl lactate to ethyl pyruvate. Additionally, we systematically studied the surface nitrogen species of NCNs by varying the pyrolysis temperature, and found that the active pyridinic N‐oxide species formed in a high thermal‐annealing treatment, acting synergistically with vanadium active sites in converting ethyl lactate with oxygen into ethyl pyruvate under mild conditions. Spot on! Combining vanadium oxide and nitrogen‐doped carbons results in cooperative catalysis for lactate oxidation.
ISSN:1867-3880
1867-3899
DOI:10.1002/cctc.201900819